Belt controller



Sept. 15, 1931. N. HUBBARD I BELT CONTROLLER Fig-4,

Original Filed Sept. 29, 1925 Fi5f ' 2 MM INVENTOR ATTORNEY)? l at entedSept-15, 1931 e A UNITED STATES NORMAN HUBBARD, OF ELIZABETH, NEW JERSEYBELT oon'rnonnnn Original application filed September 29, 1925, Seria1No. 59,279. Divided and this application filed January 4, 1928. SerialNo. 244,424.

This is a division of my application Serial N 0. 59,27 9, filedSeptember29, 1925. The invention relates to a device for starting or stopping abelt driven machine, wherein both driving and driven pulleys are fixedto their respective shafts,without the intervention of a loose pulley ormoving the belt out of alignment with the pulleys, by the guided andlimited movement outwardly or inwardly 10 of a carriage that is providedwith a handle and a pair of idlers as a means to stretch or slack thebelt.

A feature of this invention is that the termination of the. said outwardor inward 15 movement of the said carriage looks it in either positionto maintain the machine either in motion or at rest.

The invention will be understood from the description in connection withthe accompanying drawings in which Fig. 1 is a side view of the deviceshowing the belt taut; Fig.2 is a similar View showing the belt loose;Fig. 3 is a front view of the carriage; and Fig. 4 is a section alongthe line 4.1 of 25 ig- In the drawings reference character 5 in- Idicates a pulley that is to be driven by means of the belt 6 from adriving pulley 7 mounted upon adriving shaft 8 that may be driven in anyconvenient manner. The shaft 8 may be mounted upon a support 9 and .thebelt 6 cafriage that canbe shifted to tighten'the be t. 'i' e Thedevice, which is called a carriage, for convenience, includes trunnions12. upon which the idler pulleys 10 are revolubly mounted. The trunnions12 project outwardly' from the face plates 13 that are bolted by meansof the bolts 14 to the head 15. On this head 15 is an arm or handle 16whichis provided with a web 17 extending to one side thereof, and onwhich is mounted a guard plate 18. The edges of the two face plates 13opposite the belts 14 are spaced apart so that the carriage can beslidably mounted upon a l bar or guide 19. The guide 19 isfastened bymeans of screws 20 that pass through slots 21 in the guide 19 to astationary bracket or -50support22. The guide 19 is provided withbeveled ends, as indicated at 23, and is .ad- I justable longitudinallybecause of theslots 21'. The bracket or support 22 is fixed by a bo1t24to a fixed member.

, From the inner face of each plate 13, flanges 25 and 26 projectinwardly and diverge from an apex 27, so that the flange 25 is parallelto the inner face 29 and the flange 26 is paral- 'lel to the inner face28 of the head 15. The

faces 28 and 29 diverge from an apex 30."

I with the apex 30, all to the end that the carriage may be'mounted onthe guide 19 and moved n a path parallel to it, until one or the otherof the lugs 32 and 33 passes one end a of the guide 19 when the head 15is rotated on the apex 30 so as to bring one of its diverging faces 28and 29 in contact with the guide 19 and the beveled faces of lugs 32 and33 in contactwiththe' beveled end 23 of the guide 19.

The operation is as follows: The carriage being secured in a positionnearest to the pulley 5 by the lug 33 being in contact with the beveledend 23 of the guide 19, and the belt 6 slack, itis desired to drivethepulley 5, the? ,carriage is moved outwardly by means of the from thepulley 7 passes over idlers 10 on a I handle 16 along and parallel tothe guide 19,

the parallel faces of lugs 32 and 33 and the apex 30 of the body 15being in contact with the outer face of guide 19 and the apex 27 of; Ithe face plates 13being in contact with the inner face of the guide 19,until the lug 32 passes the lower end of the guide 19 when the body 15rotates on the apex 30, bringing the inner face of the guide 19 incontact with the flange 26, and the beveled face 34; of the lug 32 incontact with the outer beveled end 23 of the guide 19, thus tighteningthe belt 6 by means of the-idlers 10, and revolving the pul- I ley 5.

When it is desired to stop-driving the pulley 5, the carriage is movedinwardly by means of the arm 16 in a manner inversely of that describedfor tightening the belt to drive the pulley. y

' along the guide 19 and prevented from'being detached therefrom bycoming in contact with the member 24: when the carriage is in itsinnermost position and with a projecting heel 35 at the lower end of thebracket for support 22 whenthe carriage is in its outermost position; o

The guard 18 retains the belt 6 on the idlers 7' 10 when it is slack,and the guard 18 retains the belt on the pulley 7 at the same -time.

I claim: V 7' 1; A belt controller, comprising movably mounted idlersand lug engaging means, a i

fixedsupport, means on said support compris ing a beveled lug to retainsaid controller at either end of said 'fixedsupport.

2; A belt controller comprislng movably mounted idlers, afiz'iedsuppornsaid controllerbeing slidable onsaid support and means 'toretain said controller at either end of said fixed support,said'meansincluding'a'flange and lugs.

' 6.- In'combination a slide, an idler carriage movable along saidslide, and latching means operated by tension ofa belt for retainingsaid carriage in position on said slide to renv .der thebelt'op'erative. a

7. In combination a slide, an idler carriage and latching means operatedby tension of a belt for retaining said carriage in position-to v renderthe belt operative, said carriagebeing I 3..A belt controllercom-prising movably mounted idlers, a fixed support, said controllerbeing slidable on said support and means I to retain said controller ateither end of said fixed support, said means including a flange and lugsin alignment-withsaid flange.

idler, andmeans for hooking said carriage over the respectlveendsof-sald slide.

5. In combination a fixed guide, a carriage slidably mounted thereon andmeans comprisa beveled lug-to retain said carriage; at either end ofsand ogulde to render a belt operative or non-operative.

releasable by turning the same, i 1

- HUBBARD;

4. In combination, a. slide, a carriagemovable along sald sl1deandprovided wlth-an

